79 lines
3.2 KiB
C
79 lines
3.2 KiB
C
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/*
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* libjingle
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* Copyright 2004--2005, Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TALK_BASE_ASYNCUDPSOCKET_H_
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#define TALK_BASE_ASYNCUDPSOCKET_H_
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#include "talk/base/asyncpacketsocket.h"
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#include "talk/base/scoped_ptr.h"
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#include "talk/base/socketfactory.h"
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namespace talk_base {
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// Provides the ability to receive packets asynchronously. Sends are not
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// buffered since it is acceptable to drop packets under high load.
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class AsyncUDPSocket : public AsyncPacketSocket {
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public:
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// Binds |socket| and creates AsyncUDPSocket for it. Takes ownership
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// of |socket|. Returns NULL if bind() fails (|socket| is destroyed
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// in that case).
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static AsyncUDPSocket* Create(AsyncSocket* socket,
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const SocketAddress& bind_address);
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// Creates a new socket for sending asynchronous UDP packets using an
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// asynchronous socket from the given factory.
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static AsyncUDPSocket* Create(SocketFactory* factory,
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const SocketAddress& bind_address);
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explicit AsyncUDPSocket(AsyncSocket* socket);
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virtual ~AsyncUDPSocket();
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virtual SocketAddress GetLocalAddress() const;
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virtual SocketAddress GetRemoteAddress() const;
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virtual int Send(const void *pv, size_t cb);
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virtual int SendTo(const void *pv, size_t cb, const SocketAddress& addr);
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virtual int Close();
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virtual State GetState() const;
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virtual int GetOption(Socket::Option opt, int* value);
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virtual int SetOption(Socket::Option opt, int value);
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virtual int GetError() const;
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virtual void SetError(int error);
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private:
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// Called when the underlying socket is ready to be read from.
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void OnReadEvent(AsyncSocket* socket);
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// Called when the underlying socket is ready to send.
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void OnWriteEvent(AsyncSocket* socket);
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scoped_ptr<AsyncSocket> socket_;
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char* buf_;
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size_t size_;
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};
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} // namespace talk_base
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#endif // TALK_BASE_ASYNCUDPSOCKET_H_
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